SU1010173A1 - Installation for thermal consolidation of soil upper layer - Google Patents

Abstract

INSTALLATION FOR THERMAL STRENGTHENING OF TOP SOIL LAYER, including chassis with rigid frame, cutting equipment mounted on it, conveyor, nozzles for k 21 to 11 12 13/15 15 // making dust-like additives, vibration sealer, heat insulated firing chamber and located in in a checkerboard pattern, there are two rows of heaters, the second of which is in the form of drains, characterized in that, in order to reduce energy costs and expand technological capabilities, it is equipped with a granulator installed behind the conveyor coagulant, a first set of heaters is designed as a longitudinally extending at drenerov perforated nozzle, firing chamber located downstream of the granulator and a to i stepwise umenshayuschuyus rear frame height. SP // LU / f FIG. f 2S

Description

The invention relates to the construction, in particular, to devices for the thermal strengthening of the soil, and can be used for the construction of bases and coatings from the thermally fortified roasting of the soil in road, hydraulic engineering and ground works. A device for constructing roads from local soils by firing it is known, which includes a cutting tool, a heat chamber with fuel burners, expansion, and compaction equipment. A disadvantage of the known devices is the low efficiency of the heat flux and the limited thickness of the soil being fired, in the order of 3-5 cm, which limits its scope. Closest to the present invention is a plant for thermally strengthening a layer of soil, including a chassis with a rigid frame, cutting equipment mounted on it, a conveyor belt, nozzles for introducing dust-like additives, a vibratory compactor, a heat-insulated firing chamber and two spaced after it in a staggered order p yes to the heaters, the second of which is in the form of drains 2. The disadvantage of this installation is large heat loss, which reduces its efficiency and does not ensure uniform and high-quality strengthening of various soils in different climatic conditions. The purpose of the invention is to reduce energy costs and expand technological capabilities. The goal is achieved by the fact that the installation is for thermal strengthening. lanyards of the top layer of soil comprising a chassis with a rigid frame, cutting equipment mounted on it, a conveyor, nozzles for introducing dust-like additives, a vibratory compactor, an insulated firing chamber and two rows of heaters located in the last in a checkerboard pattern, the second of which is in the form of, Dreners, s.is supplied with a soil granulator installed behind the conveyor, - the first row of heaters is made in the form of perforated pipes arranged longitudinally at the level of dreners; is an anchor torus and has a st-. foam height decreasing to the back of the frame. FIG. 1 shows the installation, general view, longitudinal section) in FIG. 2 shows an installation, a plan view, in FIG. 3 - placement of heaters in the sbg chamber, top view. The plant has a chassis 1 with a rigid frame, in front of which there is a bunker 2 for receiving soil with cutting screw equipment 3, a soil transport mechanism, which is a screw conveyor 4, nozzles 5 for enriching the soil with dust-like additives coming from the hoppers 6 for storage these supplements. Enriched soil is fed into the granulator 7, after which granules enter through the feed opening 8 of the thermally insulated firing chamber 9, which has a stepwise decreasing cross section in height and mounted heat sources inside it in the form of gas flow distributors 10 with nozzles 11 that have holes 12 along the entire length, and drains 13 with distribution channels 14. The drains 13 at the base of the calcined layer form a horizontal drain 15 along which the high-temperature supersonic gas flow with temperature ture 1000ISOO C during the burning of the feed pressure of 150-200 atm low grade fuels or refinery waste, eg phenolic resins, .strue compressed air at an overpressure | 1,0-1,5 atm. The firing chamber 9 makes it possible to use the heat of hot gases to heat the compressed air passing through the coil 16, located at the rear of the chamber 9, which also has vertical ribs 17 buried in the ground. At the end of the firing chamber 9, openings 18 are located, which are connected by a duct 19 through which the suctioned hot gases are supplied by the fan 20 through pipe 21 to the gas flow distributors 10. Compressor 22 is installed on the firing chamber 9, and behind it is a vibrating roller 23. Installation It works in the following way. When the installation is moving, the top layer of the soil is cut by the cutting equipment 3 and conveyor 4 is fed to granulator 7. During the cutting and transportation of the soil, it is enriched with various additives coming from bins using the nozzles 5 installed along the whole ground movement path. From the granulator 7, the soil in the form of granules with a diameter of 1.0–2.0 cm comes in B caer 9 firing through the loading openings 8, in which its preliminary and final firing takes place. Preliminary firing of fuel e1s using exhaust gases. Having a temperature of 600-800 ° C, which are fed through conduit 21 to the distributors of the gas flow 10 and through the openings 12 of the nozzles 11 of the filter 11 are rubbed into the ground. As the installation moves, the prebaked soil granules transfer to the main calcination zone. The passage is a zone of reduced cross section of chamber 9, the mass of the soil is compacted, the granules of the soil approach each other, which contributes to their better sintering during the subsequent firing. The final firing of the soil is carried out by the drains 13, which create a high-temperature vortex supersonic heat flow with a temperature of 1000 GBOO s, moving along horizontal drains 15 with distribution channels 14. The drains 13 are arranged in a checkerboard pattern between the distributions (the gas flow 10 at the same level as them. The presence of high porosity of the soil allows the filter; BAIT heat flux with a high RMS ratio of about 1-2 m / s, which contributes to the creation of a constant design temperature in the burning zone, rapid loading Eva ground mass. Filtered heat flux, passing through the mass of granulated soil, is sucked off by fan 20 through openings 18 united by teams;: box 19. Holes 18 are located between drains 13, which prevents filtration of hot gases through a fraction of underlying soil from distribution 14 sintering ground mass at the exit of the heat chamber 9. It is compacted by a vibrating roller 23, in the result of which the existing horizontal drains 15 are closed. The proposed implementation of the installation provides thermal strengthening of all types of soils, including and not connected with the introduction of additives in them to join their particles. The resulting material can be used for sweeping gravel-sand foundations in pavement structures, as well as XRDI. Coating devices in various types of construction with lower energy costs.

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Claims (2)

INSTALLATION FOR THERMAL STRENGTHENING OF THE TOP LAYER OF SOIL, including a chassis with a rigid frame, cutting equipment mounted on it, a conveyor, nozzles for making dust-like additives, a vibratory seal, a heat-insulated firing chamber and two rows of heaters arranged in the staggered order, the second of which are two rows of heaters, the second of which drenerov, characterized in that, in order Nia ¹ the decrease power consumption and extend technological capabilities, it is provided with a set of ground conveyor granulator, the first row of heat The burner is made in the form of perforated nozzles longitudinally located at the level of the drains, the firing chamber is located after the granulator and has a height that decreases stepwise to the rear of the frame. § ω s 7 1 3 4 2! Yu //! 2 13/4! 5 17 FIG. /